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EP2895004B1 - Composition d'arôme pour des boissons d'infusion - Google Patents

Composition d'arôme pour des boissons d'infusion Download PDF

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Publication number
EP2895004B1
EP2895004B1 EP13767133.5A EP13767133A EP2895004B1 EP 2895004 B1 EP2895004 B1 EP 2895004B1 EP 13767133 A EP13767133 A EP 13767133A EP 2895004 B1 EP2895004 B1 EP 2895004B1
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EP
European Patent Office
Prior art keywords
flavour
tea
water
particles
extracted
Prior art date
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EP13767133.5A
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German (de)
English (en)
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EP2895004A1 (fr
Inventor
Jan Dr. LOOFT
James Christopher WEISS
Rudolf Petry
Florinda KUBO
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Takasago International Corp
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Takasago International Corp
Takasago Perfumery Industry Co
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F3/00—Tea; Tea substitutes; Preparations thereof
    • A23F3/40—Tea flavour; Tea oil; Flavouring of tea or tea extract
    • A23F3/405—Flavouring with flavours other than natural tea flavour or tea oil

Definitions

  • the present invention relates to a flavouring composition for infusion beverages (in particular, teas), to tea bags comprising the composition and to a process for preparing the composition.
  • the present invention relates to flavouring infusion beverages by pouring hot water on plant material. This is usually done by prompt extraction and filtration of the plant material to be extracted. For example, hot water is poured on coffee powder in a filter when making filter coffee, the extraction and filtration process taking place simultaneously.
  • the present invention now provides an improvement of the method for flavouring such infusion beverages prepared by simultaneous extraction and filtration, especially teas made by using infusion bags.
  • tea as used in the present invention includes all beverages made from plant materials using the methods described above (or other common methods):
  • Tea within the narrower definition is traded in different leaf grades which are primarily defined by the size of the particles of the plant material.
  • “Broken” refers to particles up to a minimum size of 1.7 mm.
  • the grade “fannings”, whereby the tea particle size ranges between 0.5 and 2.0 mm, typically between 0.6 and 1.7 mm, is mainly used for infusion bags. Tea of this size is a good compromise between rapid extractability of the plant material and reliable retention during simultaneous filtration.
  • the tea industry is offering further grades of screened tea with smaller particle diameters, but these qualities usually have a poorer flavour yield than fannings.
  • particles of tea in the narrower or wider definition are retained by a conventional tea bag up to a minimum pore size of 100 ⁇ m.
  • Infusion bags for tea are offered commercially in a large variety of flavours.
  • both different species of tea and dried pieces of plant of a species or blends are used or flavour is added to the plant material. Therefore, there is considerable demand for ways to give flavour to tea in tea bags.
  • flavours are added to the tea.
  • liquid flavours may be used for giving aroma to tea leaves.
  • DE 39 310 94 describes a method for preparing flavoured tea where tea is rendered free-flowing and the liquid aroma substances are aerosolised in an atmosphere saturated with such aroma substances. Both water-insoluble and water-soluble flavours may be used.
  • a fixing agent selected from the group consisting of gum arabic, dextran, dextrin, soluble starch and hydroxyethyl cellulose may be used.
  • Flavours in solid form may also be used to give flavour to tea leaves.
  • it is advantageous to adjust the size, (bulk) density and shape of the particles to the respective tea used.
  • Preparing tea blends and packing the tea bags involves large amounts and processes of very high speed. Therefore, it is important for such processes that the added particles do not segregate or separate from the tea. This would result in uneven distribution of the flavours in the tea bags.
  • tea particles are first wetted with a neutral oil and then flavoured by mixing in spray-dried flavours.
  • EP 0 070 719 describes the agglomeration of tea dust but also of ground spices and herbs in a fluid bed, flavours being encapsulated in the matrix material of the agglomeration. Inert carrier materials are not described.
  • flavour granulates used for flavouring tea today is made in the fluid bed mode. This is done by placing water-soluble carriers, mainly sucrose, but also modified starches or natural resins such as gum arabic, into the fluid bed and agglomerating these carriers with a solution containing the flavour.
  • water-soluble carriers mainly sucrose, but also modified starches or natural resins such as gum arabic
  • EP 0 290 299 describes a method for preparing a galenic composition consisting of water-soluble grains with an insoluble active ingredient.
  • the active ingredient is a dry plant extract.
  • the active ingredient is humidified with or dissolved in an alcohol solution and said solution is granulated with a water-soluble carrier.
  • US 4,459,315 describes a granular product for preparing a flavoured beverage by extraction with water.
  • 5 to 50 % of the granular product consists of an inert, water-insoluble, fibrous cellulose as the carrier to which 5 to 95 % of finely divided powder of a natural flavour material is bound.
  • the cellulose is preferably ⁇ -cellulose and the powder is preferably coffee powder.
  • the mixture may also be extruded and then re-granulated.
  • flavours in an encapsulated form are fixed to solid components in or on the infusion bag:
  • EP 1 164 859 describes a process for flavouring a product which is to be used for preparing an infusion beverage.
  • the process comprises preparing encapsulated flavour particles, binding the particles to a porous carrier such as a tea bag (the dosage process being controlled) and introducing the product into the carrier.
  • a porous carrier such as a tea bag (the dosage process being controlled)
  • the cited capsules have been prepared by coacervation.
  • Flavoured beverages on the basis of insoluble solids are not described.
  • JP 3 240 665 A describes that in order to add flavour to tea bags, the thread is coated with a fragrance in the form of a clathrate in cyclodextrin and a high-molecular water-soluble compound. No granulates of inert carrier materials as the flavour carrier are described.
  • US 6,056,949 (A ) relates to a process for the preparation of spherical or substantially spherical, practically dust-free aromatic and odoriferous granulated material which is free-flowing, mechanically stable and has a narrow grain-size distribution.
  • compositions or spices in the form of leaves, powders or particles, which are flavored with an emulsion containing an active volatile flavoring substance by directly spraying the exposed surface with the emulsion comprising the flavoring substance mixed with a solid film-building vehicle and an emulsifying agent.
  • a flavoring process of this kind is particularly suitable for flavoring tea or products for preparing infusions or decoctions or spices, or for perfuming solid materials used for packaging.
  • WO 2008/075945 relates to the field of flavoured particulate food and/or beverage compositions, and describes flavour encapsulate particles comprising a core particle coated with an inner coating layer comprising one or more flavourings contained in a carrier matrix and an outer coating layer comprising a substantial amount of an extract a plant material. Said outer coating contains substantial amounts of colouring substances naturally present in the plant material.
  • EP 1 214 892 and WO 2004/089113 relate to a moisture and oxygen stable composition
  • a moisture and oxygen stable composition comprising inert core particles and a partial or complete coating thereon of at least one active compound encapsulated in a carbohydrate matrix, which matrix is characterised by 5 to 95 wt.% high molecular weight film forming carbohydrate; 5 to 30 wt.% mono, di and trisaccharides; and 0 to 30 wt.% maltodextrin, based on the total weight of the carbohydrate matrix.
  • the active compound to be encapsulated in the carbohydrate matrix can be selected from the group consisting of flavourants, fragrances, pharmaceuticals and wash-active components.
  • Tea both in the wider and in the narrower sense
  • a granulate based on a specific species of tea as the carrier material usually cannot be used universally for flavouring other infusion beverages having a different aroma profile.
  • water-soluble carrier materials such as sucrose do not have this disadvantage, they are often disadvantageous for other reasons:
  • flavour-containing composition which not only has the complex aroma profile necessary for flavouring tea beverages but can also protects it from undesired degradation and brings it to life in the infusion beverage.
  • the composition therefore should reliably add the desired flavour to the beverage while not adversely interacting with the included flavour substance or imparting further flavours on its own.
  • the composition can be flexibly used for adding a well-defined flavour to a broad variety of different infusion beverage compositions without having to worry about undesired interactions or influences between the flavour composition on one hand and the extraction material of the beverage composition on the other.
  • the present invention is directed to the use of a flavouring composition for flavouring infusion beverages, the composition being in the form of particles and comprising:
  • the present invention relates to a tea bag comprising the composition, and a process for the preparation of the composition.
  • composition for flavouring infusion beverages according to the present invention comprises:
  • the composition is in the form of particles, such as granules.
  • the mean diameter of the particles is usually within the range of 0.2 to 20 mm, a mean diameter of 0.4 to 3.0 mm being preferred, a mean diameter of 0.4 to 1.5 mm being most preferred.
  • the particle diameter is determined by sieving. The measurement may be confirmed by examining individual particles using a microscope.
  • the particle of the composition is not agglomerated and corresponds to the carrier particle (2) coated with the flavour containing matrix (1).
  • the particle of the composition is an agglomerated particle (granule) comprising a plurality of carrier particles (2) as the primary particles, adhered to one another via the flavour containing matrix (1).
  • the particles of the composition may have one or more further coatings (3) in addition to the coating with the flavour containing matrix ( Figure 1a and 1b ).
  • the flavour load is usually comprised in the range of 5 to 30 wt.-% and preferably in the range from 10 to 20 wt.-% of the total weight of the carrier, the matrix and the flavour.
  • the content of the water soluble matrix material is typically within the range of 15 to 40 wt.%, preferably 20 to 30 wt.% of the total weight of the carrier, the matrix and the flavour.
  • flavour used in the composition of the present invention Any flavours and flavour substances suitable for infusion beverages may be used.
  • flavours suitable for use are extracts, essential oils, fractions of such oils, individual aroma substances or blends thereof.
  • flavour blends of natural origin are: extracts, especially extracts of tea, essential oils, concretes, absolutes, resins, resinoids, balms, tinctures.
  • oils usable as flavours are aniseed oil, bergamot oil, lemon oil, eucalyptus oil, grapefruit oil, camomile oil, lime oil, clove blossom oil, orange oil, peppermint oil, rosemary oil, sage oil, star anise oil, thyme oil, vanilla extract, juniper oil, wintergreen oil, cinnamon leaf oil, cinnamon bark oil. These oils may be used both as such and as fractions of the same. It is also possible to use single substances isolated from the oils.
  • individual aroma substances derived from the following substance classes may be part of the flavour: saturated and unsaturated aliphatic esters, e.g. ethyl butyrate, allyl capronate; aromatic esters, e.g. benzyl acetate, methyl salicylate; saturated and unsaturated organic aliphatic acids, e.g. acetic acid, capronic acid; organic aromatic acids; saturated and unsaturated aliphatic alcohols; cyclic alcohols, e.g. menthol; aromatic alcohols, e.g. benzyl alcohol; saturated and unsaturated aliphatic aldehydes, e.g. acetaldehyde; aromatic aldehydes, e.g.
  • benzaldehyde vanillin
  • ketones e.g. menthone
  • cyclic ethers e.g. p-methoxy benzaldehydes, guajacol
  • lactones e.g. gamma-decalactone
  • terpenes e.g. limonen, linalool, terpines, terpineol, citral.
  • Preferred flavours are: tea, berries (raspberry, strawberry), citrus fruit, pomaceous fruit, vanilla, spices (e.g. cloves, cinnamon), herbs (e.g. camomile, sage, thyme, rosemary, mint).
  • oxidation-susceptible flavours especially citrus flavours such as lemon, orange and bergamot flavours.
  • citrus flavours such as lemon, orange and bergamot flavours.
  • the flavour can be incorporated in the matrix by mixing the flavour or flavour substances with an aqueous solution of the water soluble matrix material and spraying the mixture onto a fluidized bed of the carrier particles in accordance with the process described later. Since most of the above-mentioned flavours have low water solubility or are water-insoluble, the mixture with the aqueous solution of the matrix material will generally be in the form of an emulsion. If necessary, an emulsifier may be added. Possible substances are known to a person skilled in the art, and are described below.
  • the matrix material there are no particular restrictions on the matrix material as long as it is suitable for the use in beverages, water soluble and capable of enclosing or encapsulating the flavour.
  • the matrix material has good film forming properties, so that the carrier particles can be covered by a homogeneous layer of the matrix material containing the flavour enclosed or encapsulated therein.
  • the flavour substances are protected from exposure to the air, so that evaporation and degradation reactions (e.g., by oxidation) can be prevented.
  • the matrix materials are chosen from carbohydrates or sugar alcohols. Mono-, Di, Oligo- or Polysaccharides may be used. The use of polysaccharides, also as mixture of different polysaccharides or of polysaccharides with mono-di- or oligosaccharides is preferred.
  • Starch and modified starch products such as maltodextrins, dextrins or cyclodextrins are preferable examples for the polysaccharide.
  • the modification of starch may be accomplished by heating in dryness, by hydrolytical action of acids or bases, by enzymatic or fermentative processes on starch.
  • the starch may origin from wheat, potatoes or maize, but also additional sources of starch are possible.
  • Maltodextrins are classified by dextrose equivalents (DE) and have a DE between 3 to 20. The higher the DE value, the shorter the glucose chains, the higher the solubility. Above DE 20 the material is classified as glucose syrup, at DE 10 or lower maltodextrins are classified as dextrin. In this invention, maltodextrins with a mean DE between 15-20 are preferred.
  • DE dextrose equivalents
  • starches or starch hydrolysates may be totally or partially modified by chemical reactions, e.g. by oxidation, esterification or etherification.
  • Acetylated starches, methylated starches, ethyl methylated starches, hydroxyl propylated starches or sodium octenyl succinyl starches may serve as examples.
  • oligo- or polysaccharides useful as the matrix material include natural gums such as pectines, xanthane, alginate, agar agar, carrageen or gum arabic (acacia gum), or oligofructose.
  • gum arabic acacia gum
  • acacia gum is particularly suitable, also because of its outstanding emulsifying properties.
  • Aqueous extracts or water soluble concentrates of food stuff e.g. juice concentrates
  • extracts tea extracts
  • syrups glucose syrup / corn syrup
  • water soluble synthetic polymers are possible matrix materials, as long as these polymers are edible.
  • Polyvinyl pyrrolidone, polyethylene glycol, polyvinyl alcohols or polyvinyl acetate can be mentioned as examples.
  • Proteins or hydrolysates of proteins such as gelatin or whey can also be used as matrix materials. These materials may be used as single compounds or as mixtures.
  • the emulsifier may be selected from all emulsifiers which are suitable for food applications, e.g. esters of fatty acids with citric acid, mono- or diglycerides of fatty acids with fatty acids; or their polyethoxlated derivatives like "polysorbate 60".
  • colouring components e.g. food dyes
  • sweeteners e.g., sweeteners
  • antioxidants e.g., food-grade acids (e.g. citric acid, acetic acid, lactic acid) or their salts
  • flavour-enhancing substances such as sodium glutamate, vitamins, minerals, etc. may be added to the emulsion.
  • colouring components are food colorants, caramel colour, malt extract, concentrates of colouring food, like elderberry, carrot or pumpkin.
  • Suitable materials of the carrier particles are water-insoluble and neutral with regard to flavour and taste.
  • a carrier material is called neutral with regard to flavour and taste if it does not add an own specific flavour or taste to the infusion prepared from granules based on this material.
  • the material can be called "tasteless”. It adds no own specific taste to the infusion because it releases not sufficient flavour or taste active molecules to influence the flavour profile of the infusion. Nor adsorbs it flavour from the infusion.
  • the carrier materials are selected from extracted plant materials, extracted tea leaves and extracted tea dust.
  • the extracted plant materials in particular, extracted tea leaves and extracted tea dust have a large surface area and can keep flavours sufficiently.
  • these materials can be formed into fine particles and can keep aroma stably for a long period of time, and therefore, even if stored or preserved at a store or the like for a long period of time until purchase, the strength of flavour at the time of extraction is high.
  • the extracted plant materials are neutral with regard to flavour and taste and have no unfavorable taste, and therefore can impart a desired flavour and taste profile including a complicated one to infusion beverages.
  • enhancing diffusivity and the balance of flavour at the time of extraction by pouring hot water are good.
  • the extracted plant materials have high safety because natural materials are utilized therefor.
  • tea leaves and tea dust that can be used for extracted tea leaves and extracted tea dust those obtained from the tea plant Cameilla sinensis (tea within the narrower definition) in different degrees of fermentation such as green or yellow tea, oolong tea, black tea or sub-species such as pu-erh tea are preferably used, and tea leaves and tea dust of black tea are particularly preferably used.
  • the extracted plant materials can be used without particular limitation as long as they are provided after extracting flavour and taste from plant materials.
  • the method for extracting flavour and taste from plant materials is not particularly limited, and a publicly-known method can be used.
  • the steam distillation method, the supercritical carbon dioxide extraction method, the thin-film-type steam distillation method (Spinning Cone Column) or the like can be used.
  • an extraction residue thereof can be used. It is advantageous to use the wettish extracted plant material immediately after extraction. In this case drying, agglomeration and coating can be all done in the same fluidized bed equipment. If the extracted plant material needs to be stored for some time, for microbiological reasons it is preferred to dry the material before storing. All methods known to the skilled person are possible, including drying in fluidized bed equipment.
  • an extraction residue obtained at the time of extracting flavour and taste by a method using a thin-film-type steam distillation equipment (Spinning Cone Column), which is often used at the time of extracting a fresh flavour can be preferably used.
  • the solid, extracted plant material can be isolated from the Spinning Cone Column slurry by all methods known to a skilled person, e.g. filtering, filter-pressing, centrifugation or sedimentation.
  • the carrier is present in the form of particles.
  • the shape of the carrier particles is such that the aspect ratio of the longest extension to the shortest extension of the particles is less than 3, more preferably less than 2, even more preferably less than 1.5.
  • the particles are of a nearly spherical shape.
  • the coating of the particles in the fluidized bed may become difficult, since the particles may entangle and felting may occur.
  • Particles having a mostly spherical shape are especially suitable for the fluidized bed process.
  • the extracted plant materials that are residues obtained after the extraction treatment of plant materials can have a mostly spherical shape without particular treatment.
  • composition of the present invention may comprise one or more further coatings in addition to the coating with the water-soluble, flavour-containing matrix.
  • the matrix already provides protection of the flavour from degradation by evaporation or oxidation, the protection can be greatly improved by the additional coatings. Thus, the shelf-life of the composition can be extended and the aroma can be preserved.
  • the same materials as used for the formation of the flavour containing matrix are also suitable for the further coatings. Most preferred are materials having good film forming properties, because they are able to build up dense layers on the particles. These materials may origin from modified starches (e.g. acetylated starch), partly hydrolysed and/or chemically modified starches or water soluble polymers (Polyvinyl pyrrolidone, polyethylene glycol, polyvinyl alcohol, polyvinyl acetate).
  • modified starches e.g. acetylated starch
  • partly hydrolysed and/or chemically modified starches or water soluble polymers Polyvinyl pyrrolidone, polyethylene glycol, polyvinyl alcohol, polyvinyl acetate.
  • melts of solid substances for the purpose of coating. These substances need to be solid at room temperature and to be meltable to obtain a homogenous, liquid melt. This melt is sprayed into the fluidized bed. The particles within the fluidized bed are wetted by the melt. The liquid layer on the particles is quickly cooled by the stream of uprising air and phase transition to the solid state is solidifying the coating around the particles.
  • higher hydrocarbons e.g. paraffin, microcrystalline waxes
  • fats from animals e.g. suet
  • fat from plants e.g. palm oil
  • long chain triglycerides waxes from animals or plants (e.g. bees wax, carnauba wax, candelilla wax), fatty acids (e.g. stearic acid) or polymers which are applicable for food or pharmaceutical applications (e.g. short chain polyethylene glycols).
  • composition of the present invention may be prepared by a process comprising the following steps:
  • the coating liquid can be provided as an aqueous solution of the matrix material, which contains the flavour in emulsified form. Further ingredients as indicated above, such as emulsifiers or colorants, may be included optionally.
  • the carrier particles may be provided in a fluidized bed, and are coated with the coating liquid, e.g., by spraying.
  • particulate material is generally fluidized in a fluid bed space by a gas stream rising upward from the bottom.
  • Liquids solutions or emulsions
  • the spray mist wets the fluidized particles.
  • process management which is essentially a function of the humidity of the particles
  • the wetted particles will be coated or agglomerated.
  • the solution or emulsion sprayed onto the particle will dry.
  • dissolved substances of the emulsion or solution which are capable of forming a film will be deposited on the particle as a layer, resulting in coating.
  • the transition between coating and agglomeration can substantially be controlled by the amount of the humidity introduced into the fluid bed: humid particles are more susceptible to agglomeration while coating is usually the result of rapid drying.
  • the dies for spraying the emulsion are arranged below or directly in the lower region of the fluid bed.
  • the direction of the spray is substantially the same as that of the fluidizing gas stream. This means that the pathways for wetting the individual particles are short, resulting in a more even agglomeration or a more homogeneous coating of the particles.
  • homogeneous mixing of the fluid bed is advantageous for a uniform result in agglomeration.
  • Homogeneous mixing of the fluid bed may be achieved by structural measures in the apparatus used, for example by forcing circulating motions on the entirety of the fluidized material. This may be achieved by using dies rotating in the horizontal direction, by rotating bottom plates or baffles as found, for example, in the rotary granulator produced by the Glatt company.
  • such apparatuses have the disadvantage of high sensitivity of the rotating parts and high mechanical strain on the particles in the fluid bed.
  • Circulation of the fluid bed may also be achieved by tangential components of the fluidizing stream of air and/or by tangential components of the solutions or emulsions sprayed into the bed.
  • the "UnilabTM” apparatus produced by the Bosch company of Schopfheim (formerly “Hüttlin”) has all of these structural advantages and is used in the subsequent Examples of the present invention.
  • two dies operate in the bottom-spray mode. They are inclined at a 45° angle to the fluid bed; moreover, additional spray air is introduced into the outer coaxial dies.
  • This vertical movement in the fluid bed is promoted by using a “diskjet ® ": radial slits for introducing the fluidizing stream of air put the air into a circulating motion (by directed milling of the slits) which efficiently circulates the fluid bed.
  • flavouring composition of the present invention may be blended with any kind of extractable material suitable for infusion beverages, such as the plant materials commonly used for teas.
  • composition of the present invention may be used in combination with tea in the narrower sense, i.e., with leaves, leaf buds and/or stems of the tea plant Cameilla sinensis (tea within the narrower definition) in different degrees of fermentation such as green or yellow tea, oolong tea, black tea or sub-species such as pu-erh tea.
  • composition of the present invention may also be used for flavouring teas under a wider definition such as herb, fruit and redbush teas.
  • teas under a wider definition
  • herb, fruit and redbush teas These are plant components which are not derived from the tea plant but, like those, are used for making teas and giving flavour. Examples include redbush, rosehip, apple, hibiscus, orange, melissa or peppermint.
  • the flavouring composition may be blended with a single type of extractable material or with a mixture of two or more extractable materials. Furthermore, a single flavour type of the composition or a combination of two or more types may be used.
  • the typical percentage of the flavouring composition in a blended tea composition is commonly in the range from 1-10 wt.%, usually in the range from 2-5 wt.%, based on the total weight of the solids of the tea composition.
  • the present invention also provides a tea bag comprising a filter enveloping the flavouring composition of the present invention, typically together with one or more types of extractable plant materials for infusion beverages (teas).
  • Tea bags are available in different geometries, sizes and of different filter materials.
  • the filter material needs to be tear resistant, moisture proof and at the same time to be tasteless.
  • tea bags have been made from silk, cotton and cellulose, but these material were disadvantageous by their own taste.
  • most tea bags are made from Abaca fibres (“Manilla fibres”), from bio polymers like poly lactide or heat sealable composite materials having a thermoplastic fibre coating on one side.
  • Tea bags which are usual in trade show a good compromise between permeability for the hot water and retention of the extraction material - both by the dry tea bag (no "sifting" into the outer packaging) and during the extraction by hot water. Possible cloudiness of the infusion caused by fines or small articles is unfavourable.
  • these filter materials have a mesh aperture up to 100 ⁇ m. At the end of the infusion step, the plant materials are easily removed from the finished beverage by taking out the tea bag.
  • compositions of the subsequent Examples were prepared using a Hüttlin laboratory fluid bed unit type UnilabTM:
  • a Diskjet ® insert is integrated in the product container. Through the apertures (gaps) of the air guide sheets of the Diskjet ® , the process air which is fed from the below tangentially reaches the product bed. The velocity of the air leaving the gaps is relatively high so it sets the product lying above the gaps in motion.
  • Two 3-component spray dies for spray liquid / atomizing air / microclimate are used.
  • the spray liquid is transported in the center part of the die.
  • the end piece of the die can be fitted with liquid caps with different diameters (1,0 mm used as standard).
  • the spray air is conducted. It atomizes the spray liquid.
  • Both media are again surrounded by a third component, the microclimate.
  • the microclimate ensures the best possible development of the spray cone, covers this spray cone from drying air by comparably low temperature and high humidity and at the same time keeps the front area of the nozzle clean.
  • the pressure of the spray air depends on the viscosity of the spray liquid, the spray rate and the diameter of the liquid cap; e.g. for spray liquids having a high viscosity, a high spray rate is required than for spray liquids with low viscosities.
  • tea dust "dust 1" black tea "Dust 1" from J. Bünting Teehandelshaus GmbH & Comp., Leer made from the tea plant Cameilla sinensis, both as extracted and as original material
  • tea leaves “leaves 1” black tea "Probentee” from J. Bünting Teehandelshaus GmbH & Comp., Leer made from the tea plant Cameilla sinensis, as extracted
  • tea granulates "granulates 1" (black tea "Teestaub granuliert” from J.
  • 1,500 g of tea dust ("dust 1"; mean particle size 250 ⁇ m) are introduced into the fluid bed and fluidised by means of 50°C air (250 l/min).
  • dust 1 mean particle size 250 ⁇ m
  • an emulsion of 1,000 g of water, 400 g of maltodextrin, 200 g of gum arabic and 390 g of tea flavour of the type black tea "Darjeeling" TEG 10351786 are injected into the fluid bed from below.
  • the resulting agglomeration will lead to the formation of particles having a mean diameter of 520 ⁇ m.
  • the particles are then coated in the fluid bed within 8 minutes by spraying a solution of 100 g of acetylated starch in 250 ml of water into the fluid bed from below (calculated load of 15 % of tea flavour in the dry matter).
  • tea dust 3000 g of tea dust ("dust 1"; mean particle size 250 ⁇ m) are extracted with 20 1 of boiling water for 10 min. The swollen tea dust is filtered of by use of a suction filter. The remaining wet solids (tea dust) is dried by use of hot air (90°, 300m 3 /h) in the fluidized bed for 70 min.
  • 1,500 g of the extracted tea dust are introduced into the fluid bed and fluidized by means of 90°C air (250 l/min).
  • an emulsion of 1,000 g of water, 400 g of maltodextrin, 200 g of gum arabic and 390 g of tea flavour of the type black tea "Darjeeling" TEG 10351768 are injected into the fluid bed from below.
  • the resulting agglomeration will lead to the formation of particles having a mean diameter of 700 ⁇ m.
  • the particles are then coated in the fluid bed within 8 minutes by spraying a solution of 100 g of acetylated starch in 250 ml of water into the fluid bed from below (calculated load of 15 % of tea flavour in the dry matter).
  • 1,500 g of the extracted tea dust are introduced into the fluid bed and fluidized by means of 90°C air (250 l/min). Within 30 minutes, an emulsion of 1,000 g of water, 400 g of maltodextrin, 200 g of gum arabic are injected into the fluid bed from below. The resulting agglomeration will lead to the formation of particles having a mean diameter of 600 ⁇ m.
  • 1,500 g of household sugar (finely refined, sucrose) are introduced into the fluid bed and fluidised by means of 50°C air (350 l/min).
  • an emulsion of 1,000 g of water, 400 g of maltodextrin, 200 g of gum arabic, 200 g of caramelin and 405 g of tea flavour of the type black tea "Darjeeling" TEG 10351768 are injected into the fluid bed from below.
  • the resulting agglomeration will lead to the formation of particles having a mean diameter of 700 ⁇ m.
  • the particles are then coated in the fluid bed within 12 minutes by spraying a solution of 100 g of acetylated starch in 250 ml of water into the fluid bed from below (calculated load of 15 % of tea flavour in the dry matter).
  • 1,500 g of a plant fibre (“Cellulose PF75”) are introduced into the fluid bed and fluidised by means of 80°C air (200 l/min). Within 60 minutes, an emulsion of 1,000 g of water, 400 g of maltodextrin, 200 g of gum arabic, 60 of malt extract and 300 g of tea flavour of the type black tea "Darjeeling" TEG 10351768 are injected into the fluid bed from below.
  • the agglomeration leads to the formation of particles having a mean diameter of 500 ⁇ m.
  • the particles are then coated in the fluid bed within 12 minutes by spraying a solution of 100 g of acetylated starch in 250 ml of water into the fluid bed from below (calculated load of 15 % of tea flavour in the dry matter).
  • Agglomerate on the basis of pea starch 1,500 g of pea starch (I 50M, Roquette GmbH) are introduced into the fluid bed and fluidised by means of 80°C air (250 l/min). Within 40 minutes, an emulsion of 1,000 g of water, 400 g of maltodextrin, 200 g of gum arabic, 60 of malt extract and 390 g of tea flavour of the type black tea "Darjeeling" TEG 10351768 are injected into the fluid bed from below. The resulting agglomeration will lead to the formation of particles having a mean diameter of 500 ⁇ m. The particles are then coated in the fluid bed within 12 minutes by spraying a solution of 100 g of acetylated starch in 250 ml of water into the fluid bed from below (calculated load of 15 % of tea flavour in the dry matter).
  • 1,500 g of tea granulates ("granulates 1"; mean particle size 800 ⁇ m) are introduced into the fluid bed and fluidised by means of 90°C air (250l/min). Within 30 minutes, an emulsion of 1,000 g of water, 400 g of maltodextrin, 200 g of gum arabic and 390 g of tea flavour of the type black tea (Darjeeling) "Darjeeling" TEG 10351768 are injected into the fluid bed from below. The resulting agglomeration will lead to the formation of particles having a mean diameter of 1000 ⁇ m. The particles are then coated in the fluid bed within 8 minutes by spraying a solution of 100 g of acetylated starch in 250 ml of water into the fluid bed from below (calculated load of 15 % of tea flavour in the dry matter).
  • granulates 1 mean particle size 800 ⁇ m
  • Extracted tea leaves (“leaves 1"; mean particle size 2500 ⁇ m) is prepared in two different ways:
  • the remaining wet solids are dried by use of hot air (90°, 300 m 3 /h) in the fluidized bed for 90 min.
  • 1,500 g of the extracted tea leaves (prepared by the above method 1) are introduced into the fluid bed and fluidized by means of 90°C air (250 l/min).
  • an emulsion of 1,000 g of water, 400 g of maltodextrin, 200 g of gum arabic and 390 g of tea flavour of the type black tea (Darjeeling) "Darjeeling" TEG 10351768 are injected into the fluid bed from below.
  • the resulting agglomeration will lead to the formation of particles having a mean diameter of 2800 ⁇ m.
  • the particles are then coated in the fluid bed within 8 minutes by spraying a solution of 100 g of acetylated starch in 250 ml of water into the fluid bed from below (calculated load of 15 % of tea flavour in the dry matter).
  • 1,500 g of the extracted tea leaves are introduced into the fluid bed and fluidized by means of 90°C air (250 l/min). Within 30 minutes, an emulsion of 1,000 g of water, 400 g of maltodextrin, 200 g of gum arabic are injected into the fluid bed from below. The resulting agglomeration will lead to the formation of particles having a mean diameter of 2700 ⁇ m.
  • An agglomerate based on the carrier and without addition of flavour is prepared by the above-described method. 0.11 g of this agglomerate is blended with 4.00 g of black tea of the brand "Lipton Yellow Label" and filled into an infusion bag (mesh aperture 100 ⁇ m). This infusion is compared with an infusion prepared from 4.00 g of unmodified "Lipton Yellow Label". Both infusions are prepared by pouring hot water (95°C) over the bags. The teas were allowed to draw for 3.0 minutes. Then the infusion bags are taken out.
  • an agglomerate prepared from (non-extracted) black tea dust (as used in Comparative Example 1) changed the flavour profile of "Lipton Yellow Label".
  • agglomerate prepared from extracted and dried black tea dust (Example 1), without any flavour added, did not change the flavour profile of "Lipton Yellow Label”.
  • This carrier material can be called "neutral with regard to flavour and taste”.
  • Example 2 the microcrystalline cellulose of Reference Example 2, the cellulose fibers of Reference Example 3, the pea starch of Reference Example 4 and agglomerate prepared from extracted and dried black tea leaves, without any flavour added, of Example 5 were confirmed to be neutral with regard to flavour and taste, while the sucrose of Comparative Example 2 and the agglomerate prepared from (non-extracted) tea granulates of Comparative Example 3 were found to change the flavour profile of "Lipton Yellow Label".
  • each flavour granulate (calculated flavour load of 15% black tea flavour) was blended with 4.00 g of black tea of the brand "Lipton Yellow Label" and filled into infusion bags, followed by pouring hot water (95°C) over the bags. The tea was allowed to draw for 3.0 minutes. Then the infusion bag was taken out.
  • the tea containing granulates on the basis of neutral carriers was preferred over those with granules on the basis of sucrose or of unextracted tea dust because it had a more pronounced floral touch.
  • the teas comprising granules based on microcrystalline cellulose and extracted tea dust received the highest scores.
  • the sample prepared from microcrystalline cellulose showed the most intensive flavour and was characterized as most floral, but also as most balanced and complex sample, also showing most mouthfeel.
  • the sample prepared from extracted tea leaves was second in intensity and showed good floral notes and complexity.
  • the samples prepared from unextracted tea dust and sucrose were the ones with the least intensive floral notes and flavour.
  • each flavour granulate (calculated flavour load of 15% black tea flavour) was blended with 2.00 g of black tea of the brand "Lipton Yellow Label" and filled into infusion bags, followed by pouring 150 ml of hot water (95°C) over the bags. The tea was allowed to draw for 3.0 minutes. Then the infusion bag was taken out.
  • Example 2 Example 5 balance of flavour immediately after pouring hot water 18 13 12 11 16 19 strength of flavour immediately after pouring hot water 19 16 14 12 16 19 strength of flavour 3 minutes after pouring hot water 18 13 13 10 16 18 top impact of flavour immediately after pouring hot water 20 16 14 12 17 20 strength of flavour immediately after pouring hot water after stored at room temperature for 1 year 16 5 5 4 9 15 * Reference Example not belonging to the invention

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Tea And Coffee (AREA)
  • Seasonings (AREA)

Claims (14)

  1. Composition d'arôme pour des boissons d'infusion, la composition étant sous la forme de particules et comprenant :
    un arôme;
    un matériau soluble dans l'eau sous la forme d'une matrice contenant l'arôme incorporé dans celle-ci ; et
    des particules de support insolubles dans l'eau neutres concernant l'arôme et le goût, qui sont revêtues de la matrice soluble dans l'eau contenant l'arôme,
    dans laquelle les particules de support comprennent ou consistent en un ou
    plusieurs des matériaux suivants : extrait de matériaux de plantes, extrait de poudre de thé, extrait de feuilles de thé.
  2. Composition selon la revendication 1, qui se présente sous la forme de particules agglomérées.
  3. Composition selon la revendication 1 ou 2, dans laquelle le diamètre moyen des particules est de 0,2 à 20 mm, un diamètre moyen de 0,4 à 3,0 mm étant particulièrement préféré.
  4. Composition selon l'une quelconque des revendications 1 à 3, dans laquelle le matériau de matrice soluble dans l'eau comprend ou consiste en un ou plusieurs des matériaux suivants : amidon et produits d'amidon modifié; gommes naturelles ; oligofructose ; polymères comestibles solubles dans l'eau.
  5. Composition selon l'une quelconque des revendications 1 à 4, qui comprend en outre un ou plusieurs revêtements supplémentaires sur le revêtement avec le matériau de matrice contenant l'arôme.
  6. Composition selon la revendication 5, dans laquelle le revêtement supplémentaire comprend un agent filmogène choisi parmi : l'amidon et des produits d'amidon modifié; des gommes naturelles ; un oligofructose; des polymères comestibles solubles dans l'eau; des hydrocarbures ; des graisses ; des cires.
  7. Utilisation d'une composition d'arôme, qui se présente sous la forme de particules et comprend :
    un arôme;
    un matériau soluble dans l'eau sous la forme d'une matrice contenant l'arôme incorporé dans celle-ci ; et
    des particules de support insolubles dans l'eau neutres concernant l'arôme et le goût, qui sont revêtues avec la matrice soluble dans l'eau contenant l'arôme,
    pour aromatiser une boisson d'infusion,
    dans laquelle les particules de support comprennent ou consistent en un ou
    plusieurs des matériaux suivants : extrait de matériaux de plantes, extrait de poudre de thé, extrait de feuilles de thé.
  8. Utilisation selon la revendication 7, dans laquelle la composition est utilisée conjointement avec un matériau végétal extractible.
  9. Sachet de thé comprenant un filtre enveloppant la composition selon une ou plusieurs des revendications 1 à 6.
  10. Sachet de thé selon la revendication 9, dans lequel les particules de support ont une distribution de tailles telle que le diamètre le plus petit des particules de support soit plus grand que le diamètre de pores du matériau filtrant du sachet de thé.
  11. Procédé de préparation d'une composition selon au moins l'une des revendications 1 à 6, qui comprend les étapes suivantes :
    (a) fourniture d'un liquide de revêtement comprenant le matériau de matrice soluble dans l'eau et l'arôme ;
    (b) fourniture des particules de support insolubles dans l'eau comprenant ou consistant en un ou plusieurs des matériaux suivants : extrait de matériaux de plantes, extrait de poudre de thé, extrait de feuilles de thé,
    (c) revêtement et éventuellement agglomération des particules de support avec le liquide de revêtement; et
    (d) éventuellement application d'un ou plusieurs revêtements supplémentaires sur la composition obtenue à l'étape (c).
  12. Procédé selon la revendication 11, qui a un rapport de mélange de 50 à 70 % en poids de particules de support, de 20 à 30 % en poids de matériau de matrice et de 10 à 20 % en poids d'arôme, la somme du support, de la matrice et de l'arôme étant de 100 % en poids.
  13. Procédé selon la revendication 11 ou 12, qui est réalisé dans un réacteur à lit fluidisé.
  14. Procédé selon la revendication 13, où le réacteur à lit fluidisé fonctionne en mode de pulvérisation par le bas.
EP13767133.5A 2012-09-14 2013-09-09 Composition d'arôme pour des boissons d'infusion Revoked EP2895004B1 (fr)

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EP12184482 2012-09-14
PCT/JP2013/074783 WO2014042235A1 (fr) 2012-09-14 2013-09-09 Composition aromatisante pour infusions
EP13767133.5A EP2895004B1 (fr) 2012-09-14 2013-09-09 Composition d'arôme pour des boissons d'infusion

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EP3294070B1 (fr) * 2015-03-02 2020-04-29 SWM Luxembourg s.a.r.l. Composition à faible densité apparente destinée à la fabrication d'une boisson de type thé présentant une teneur réduite en poussière ou en fines
JP6855393B2 (ja) * 2015-07-16 2021-04-07 ユニリーバー・ナームローゼ・ベンノートシヤープ 飲料前駆体
FR3049620B1 (fr) 2016-04-05 2020-06-12 Swm Luxembourg Sarl Papier vegetal comprenant des fibres d'une plante
JP2018099099A (ja) * 2016-12-21 2018-06-28 キリン株式会社 甘味及び苦渋味を調和した味わいの深い容器詰緑茶飲料
JP7121331B2 (ja) * 2018-03-23 2022-08-18 不二製油株式会社 茶類飲料用沈殿抑制剤
JP7304266B2 (ja) * 2018-10-25 2023-07-06 アモーレパシフィック コーポレーション 水に素早く分散する茶加工品および茶加工品の製造方法
US10813368B1 (en) 2019-10-31 2020-10-27 Gregory Glancy Systems and methods for the preparation of tablets of botanical extracts including tea
WO2021104619A1 (fr) * 2019-11-27 2021-06-03 Symrise Ag Produits particulaires et leur procédé de production
CN114828701A (zh) * 2019-12-16 2022-07-29 东京联合咖啡烘焙株式会社 咖啡袋
EP4110067A1 (fr) * 2020-02-26 2023-01-04 Firmenich SA Composition aromatisée
DE102021105519A1 (de) * 2021-03-08 2022-09-08 August Töpfer & Co. (GmbH & Co.) KG Aromaspeicher für die Speicherung von Duftstoffen, Verfahren zu seiner Herstellung sowie Trinksystem mit einem solchen Aromaspeicher
WO2022223110A1 (fr) * 2021-04-21 2022-10-27 Symrise Ag Préparations comprenant un arôme et un extrait de thé
JP2024531080A (ja) * 2021-08-17 2024-08-29 フイルメニツヒ ソシエテ アノニム 甘味組成物
CN114947095B (zh) * 2022-03-25 2023-07-25 广州市雅禾生物科技有限公司 风味颗粒及其制备方法和应用
CN116172099A (zh) * 2022-08-16 2023-05-30 刘树锜 茶叶及调味茶着色工艺
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US20150230491A1 (en) 2015-08-20
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EP2895004A1 (fr) 2015-07-22
JP2015528280A (ja) 2015-09-28
CN104602531A (zh) 2015-05-06

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